Last exercise I was on, I got given 3 mags. They felt suspiciously light so on closer inspection I found I had a grand total of nine blanks per mag. The novelty wore off when on the second day I was told to provide fire support. Nothing worse then watching regular observers from the PDF piss themselves laughing at several of us imitating recoil and yelling "BANG!".
Range work, we usually only get a mag or two, for a couple of days, a couple of times.... I fondly remember my day when I got two full Steyr mags and told to use the automatic function on it. That same day, we all had to qualify on the GPMG
Having carried it for three months, I was over the moon about getting to fire it!
I'll definetely push for my Corporals course in a couple of years, be sweet to use the USP, 203 and different versions of the Steyr!
That MILES thing does sound pretty cool though(shortcomings aside!). Scarily close to one of our training suggestions that we use paintball and airsofting to supplement our training :O!